When Worlds Collide: The Indo-Europeans and the Pre-Indo-Europeans, the Bellagio Papers, presented by Thomas L. Markey and John A.C. Greppin (Ann Arbor, 1990), in 411 searchable pdf pages, bookmarked by article.
These studies by world-renowned scholars mostly were presented at a conference held at the Bellagio Center, Lake Como, Italy, during February 8-13, 1988. From the book jacket: "What evidence do we have for Non-Indo-European groups in Western Europe? Did the Indo-Europeans come by invasion, diffusion, immigration? Were they a majority or an elitist minority? Does the 'wave of advance model' really yield an adequate explanation of intrusion?" Papers and discussion by: G. Bolognese, Charles Burney, Timothy Champion, I. Diakonoff, G. B. Djahukian, A. Gilman, Thomas Gamkrelidze, Maria Gimbutas, John Greppin, Eric Hamp, Alice Harris, T. L. Markey, Roger J. Mercer, Edgar Polome, Colin Renfrew, Clive Ruggles, K.-H. Schmidt, Francisco Villar, Stefan Zimmer, Daniel Zohary, Marek and Kamil V. Zvelebil. Compiled by Robert Bedrosian.
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